GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Carrying Amount of Net Other Intangible Assets by Class (Details) - USD ($) $ in Millions	Jul. 31, 2019	Oct. 31, 2018
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 955.6	$ 207.6
Accumulated Amortization	161.3	127.0
Net Intangible Assets	794.3	80.6
Net Intangible Assets	794.3	80.6
Customer relationships
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible Assets	891.1	162.2
Accumulated Amortization	135.6	105.8
Net Intangible Assets	755.5	56.4
Trademarks, patents and trade names
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible Assets	27.0	10.9
Accumulated Amortization	7.9	5.1
Net Intangible Assets	19.1	5.8
Trademarks, patents and trade names
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible Assets	2.3
Accumulated Amortization	0.4
Net Intangible Assets	1.9
Total
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible Assets	22.0	21.2
Accumulated Amortization	17.4	16.1
Net Intangible Assets	4.6	5.1
Trademarks, patents and trade names
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Indefinite lived intangible assets	$ 13.2	$ 13.3